Supporting apparatus for gyratory machines.



Patented Mar. 26, |90|.-

J. WARRINGTON. SUPPORTING APPARATUS FOR GYBATOBY MACHINES,

(Application filed Aug. 3, 1900.)

5 Sheets-Sheet I.

(No Model.)

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THE mums PEIERS Mom-L 1H0 wAsumnmn o c No. 670,653. Patented Mar. 26, l90l.

J. WI\RRIN(1I.'I'ON.. SUPPORTING APPARATUS FOR GYRATORY MACHINES,

(Applicatiozi filed Aug. 3, 1900.: (No Model.) 5 Sheets8haet 2,

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SUPPORTING APPARATUS FOR GYRATORY MACHINES (Application .filed Aug. 3, 1900.)

(No Model.) 5 Sheets-Sheet 3.

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Patented Mar. 2-6, I901.

J. WARRINGTUN, SUPPORTING APPARATUS FOR GYRATDRY MACHINES,

' (Application flied Aug. 8, 1900.)

5 Sheets-Sheet 4,

(No Model.)

INVENTOP,

No. 670,653. Patented Man 26, 1901.

.1. W'ARBINGTON.

SUPPORTING APPARATUS FOR GYBATORY MACHINES,

(Application filed Aug. 3, 1900.)

(No Model.) 5 Sheets-Sheet 5.

Illil lll I r J I Q1: n ll Ii I I II I II I l 1 I v I l 1 l I WITNESSES: INVENTOH Jesse wocrni j y" UNITED STATES PATENT OFFICE.

JESSE WARRINGTON, OF INDIANAPOLlS, INDIANA, ASSIGNOR OF ONE-HALF I TO NORDYKE & MARMON COMPANY, OF SAME PLACE.

SUPPORTING APPARATUS FOR GYRATORY'MACHINES.

SPECIFICATION forming part of Letters Patent No. 670,653, dated March 26, 1901.

Application filed August 3, 1900. Serial No. 25,738. (No model.) 7

To all whom it may core/eerie:

Be it known that I, J nssn WARRINGTON, a citizen of the United States, residing at Indianapolis, in the county of Marion and State of Indiana, have invented certain new and useful Improvements in Supporting Appara: tus for Gyratory Machines, of which the following is a specification. 1

The object of my present invention is to produce a suitable supporting apparatus to be used in connection with the driving mechanism for gyratory machines, especially that Variety used in flouring-mills for the purpose of bolting or sifting and grading the stock and generally known as sifters.

Gyratingsifters when suspended by the corners have or may have a variety of movements opposed to the best results. There is generally a slight swaying which tends to throw the sieves into a somewhat-inclined position, so that the sifting-surfaces depart in action from a level position, which tends to cause the stock to flowunequally over their surfaces, so that the best results are not obtained. Then, too, a combined swaying and twisting motion cannot be Wholly prevented, and such a movement aggravates the difficulty .just mentioned. In a gyratory sieve-machine in order to produce the best results, first, the center of 0 gravity of the gyrating sieve-box should move in the same plane as does the center of gravity of the balancing weights; second, the sieve-box in all phases of its motion should remain parallel with its immediately previous position, and; third, the point of suspension of the sieve-box should be in the center in order that the throw of the upper part of the box need not be of g the same throw as the lower part, and, further, that the upper part of the box need not be in the same phase of the motion as the lower part. These conditions, as well as various other advantages, are attained in a machine wherein the sup porting devices embody my present inven-- 5 tion, as will be hereinafter more particularly described and claimed. v

Referring to the accompanying drawings, which are made a part hereof, and on which similar reference characters indicate similar parts, Figure 1 is a top or plan view of a machine provided with apparatus embodying my said invention; Fig. 2, a sectional side elevation ofthe same as seen from the dotted line 2 2 in Fig. 1, one of the pair of sieve-boxes being broken away and removed to show the suspending and driving mechanism; Fig. 3, a front elevation; Figs. 4; and 5, detail vertical sectional views through the central suspending apparatus as seen from the dot-ted lines 4 4 and 5 5 in Fig. 6; Fig. 6, a similar view as seen from the dotted lines 6 6 in Figs. 3, 4, and 5; Figs. 7 and 8, horizontal sec-, tional views as seen when looking downwardly from the dotted lines 7 7 and S 8, respectively, in Fig. 6; Fig. 9, a detail sectional view as seen from the dotted line 9 9 in Fig. 7, and Fig 10 a detail sectional view as seen from the dotted line 10 10 in Fig. 8.

The frame in the machine illustrated is composed of two A-shaped ends 1, which are connected by suitable bridge-trees 2 3 4 at the upper, central, and lower portions, respectively. A central shaft 5 is suitably mounted in bearings carried ,by the upper and lower bridge-trees and by a suitable crank construction is adapted to drive the gyratory sieve boxes, which are connected thereto at the upper and lower ends. In the. machine shown there are two of these sieveboxes 6, which are substantially counterparts of each other and are strongly connected together at the top and bottom by means of heavy connecting-irons 7 and 8, which are bolted to the inner corner-posts of the sieveboxes, as shown.

The middle bridge-trees 3 are strongly and rigidly supported at a central point by supporting-rods 9, extending therefrom bracewise to the upper corners of the A-shaped frames 1, so that an extremely strong and rigid support is provided at this point. A heavy rocking frame 10 is mounted on rockerlike bearings 17', mounted in suitable seats in this bridge-tree 3, and a double-link structure 11 is mounted on the ends of said rockerframe, being carried by rocker-like bearings 12, having suitable seats in said rocker-frame, as shown. 11 engages in a similar manner with a rockerlike structure 13 by means of rocker-bearings 14, and this in turn is connected by similar bearings 15 and stirrups 16 to the lower heavy At the lower end said structure IOO bridge-frame or connecting-iron S, to which the sieve-boxes (3 are connected at the corners. The sieve structure is thus carried from a central point by means of the doublelink structure 11, which is mounted to swing in both directions by means of the two pairs of rocker-bearings at each end, one arranged to rock in one direction and the other arranged to rock in the other direction. The center of suspension therefore is capable of being equidistant from the points of driving contact in the driving mechanism and from the centers of the two sieve-boxes, so as to occupy a position at the center of motion and at the center of gravity. Notwithstanding this, the end of the link structure 11 which is connected to the gyrating device is, because of the double oscillating motion thus provided for, capable of traveling with and participating with the extreme movement of said gyrating structure. The center of oscillation with a device of this character is always substantially coincident with the axis of the shaft. By this arrangement not only is an easy and equal movement obtained, but considerable expense in manufacture is avoided, as the cranks on the shaft neither have to be adjusted to extend in exactly the same direction from the center of motion, nor are they necessarily of exactly the same length, although as a matter of custom and convenience they are in practice approximately equal in both respects.

Having thus fully described my said invention, what I claim as new, and desire to secure by Letters Patent, is-

1. The combination, of a suitable framework, a crank-shaft, a structure adapted to be driven with a gyratory motion, crank connections between said crank-shaft and said driven structure, whereby the gyratory motion is imparted to said'structure and at the same time parallelism is maintained between said structure and said shaft, and a hanger supported from said framework and attached to said driven structure with the center of oscillation substantially coincident with the axis of the shaft.

2. The combination of a suitable framework, a crank-shaft, a structure adapted to be driven with a gyratory motion and connected to and driven from said shaft, and a hangerhaving double rocker-bearings at both ends the axes of which extend substantially at right angles with each other, said hanger being supported from a stationary structure at one end and extending to and supporting the gyratory structure, the axis of oscillation of the supported end being substantially coincident with the axis of the driving-shaft.

3. The combination of a suitable framework, a structure adapted to be driven with a gyratory motion, a hanger carried from a rigid portion of said framework intermediate the cranks on the driving-shaft and extending to and connected with a portion of the gyratory movable structure near the end thereof, said hanger having double rockerbearings at both ends the axes of which extend substantially at right angles with each other, a crank-shaft extending up centrally through the hanger, and crank connections between said crank shaft and the driven structure at points above and below the point of suspension. I

at. The combination of a suitable framework, a structure adapted to be driven with a gyratory motion, a hanger carried from a rigid portion of said framework at or near the central portion thereof and extending to and connected with a portion of the gyratory movable structure near the end thereof, said hanger having double rocker-bearin gs at both ends the axes of which extend substantially at right angles wit-h each other, a cran k-shaft extending up.centrally through the hanger, and crank connections between said crankshaft and the driven structure at points above and below the point of suspension.

In witness whereof I have hereunto set my hand and seal, at Indianapolis, Indiana, this 30th day of July, A. D. 1900.

JESSE WARRINGTON.

Witnesses:

CHESTER BRADFORD, JAMES A. WALSH. 

